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20121027
20121104
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is a fellow at the academy of sciences that shot this video. when it comes to ocean research, silvia is the gold standard. and she says it is time the rest of us start paying attention. >> we are messing around with the chemistry of the planet. >> reporter: at the moments she is focusing on tiny organisms. it is a greenish single cell creature discovered by the mit professor. this glass of ocean water could willed ho billions. could hold billions. >> it contributes 20% of the oxygen in the atmosphere. >> reporter: an incredible one-fifth comes from this minute species, critical to life as we know it. >> it does two important things. it generates oxygen, and it takes up carbon. carbon dioxide. it trans -- transforms that to cor bow hydrates. it is -- carbohydrates. >> reporter: but the fragile ecosystem is damaged by excess carbon from cars, power plants and factories. the carbon turns the ocean more acidic making it caw corrosive to shellfish and coral. they are not sure of the affect, but silvia says we can't wait to find out. >> the trend is clear. we are losing elements that keep
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